Well, you're being obnoxious in a way that targets a particular ethnic group, but it's a group that isn't really victimized, or sensitive about it, so no one much cares.
The more useful questions to ask yourself are, how funny is that after the first handful of times to anyone older than 13, and is that really the kind of dynamic you want to cultivate with your gf?
That suggests you could mix flour and vegetable oil and maybe dry it into bricks which might be cheaper than donuts usual are. I wonder how dirty that burns...